Bacillariece, Fragilariacese, Syiiedra. 655 



Syn. p. 151, t. 39, f. 1 a, Syneclra oxyrhynckus Kuetz. Bacill. 

 p. GO, t. 14, f. VIII, 2, IX-XI: parva, 70-80 y.. louga, valvi.s linearibus, 

 apicibus iu rostrum longum paullatira subattenuatis, striis circiter 10 

 in 10 y.. specie passim.— Var. vitrea (Bory, Kuetz.) V. H. Syn. p. 151, 

 t.38, f. 11-12, EchineUa vilrea Bory toste \\.wQi7AU'^, Syneclra vitrea 

 Kuetz. Bacill. p.Gt), t. 14, f. 17, Sp. p. 45, Syneclra splendens var, vi- 

 trea Rabenh. Fl. Eur. Algar. I, p. 134: valvis anguste linearibus, api- 

 cibus longe angusteque rostratis; striis totam valvam percurrenti- 

 bus. In Gallia (Lenormand). — Fortasse ad hanc speciera pertinent 

 ut synonyraa Syneclra acjgregata Breb. in Rabenh. Alg. n. 687 

 et Synedra interriipta Auersw. iu Rabenh. Alg. n. 403. — Var. 

 tolstensis Rattr. Diat. North. Tolstoa p. 437, t. XXIX, f. 12: nodulo 

 terminali 4,5 y.. lato, striis parallelis (nec obliquis) ornato; strictura 

 3 u.. lata; striis 15 in 10 y. Fossilis in deposito a North Tolstoa Le- 

 wis». — Apices frustuli observati iis Synedrce Ulnce var. danicce 

 sunt siraillirai. — Var. Cliaseana B. W. Thomas in Walk. et Chase 

 New and rare Diatoras I, p. 4, t.2, f. 8, Synedra ChaseiWaXk et Chase 

 in Habirsh. Cat. of Diat.: valvis gracilibus, 50-75 u.. vel ultra lon- 

 gis, striis 6-6 Vo ( — 10?) in 10 u. , pseudonodulo nullo, apicibus val- 

 vae constrictis rotundatisque. In lacu «Michigan» (B. W. Thomas). 



4. Synedra Goulardi Breb. in Cl. et Grun. Arct. Diat. p. 107, t. 6, 2585 

 f. 119. — Valvis medio paullum angustatis et hinc 8 u.. latis, 

 57-80:^9, apicibus acutulis; striis transversis lO'/, in 10 y., ad 

 apices leniter radiantibus, in raedio aream subquadraticara effi- 

 cientibus. , 



Hab. ad aBuenos Ayres, Portorico, Kamtschatka, Jenissey)). 



5. Synedra provincialis Grun. T. R. M. S. 1877, p. 166, pl. 193, f. 6, 25S6 

 V. H. Syn. t. 40, f. 8. — Minor, frustulis a facie connectivali visis 

 sublinearibus, 65-1 10 a. longis, valvis lineari-lanceolatis, polis pau- 

 lulum tumidulis, subtruncatis, pseudorhaphe angusta, striis tran- 

 sversis tenuibus 30 in 10 u.., nodulis terminalibus conspicuis. 



Hab. in mari Mediterraneo ad oras Gallise prope «Cette» (L. 

 Lindig). — Var. tortuosa Grun. I. c. f. 7, V. H. I. c. f . 9 : valvis 

 plus minus undulato-tortuosis. Ad «Upolu» et ins. Samoeuses (D. 

 Graefpe). 



6. Synedra laevigata Grun. in T. R. M. S. 1877, t. 193, f. 3. — Ma- 2587 

 jor, frustulis e facie connectivali visis linearibus, 80-240 y.. longis, 



ad polos paullulum attenuatis, valvis anguste lineari-Ianceolatis, 

 acutiusculis, striis transversis tenuissimis, ultra 38 in 10 ^. 



Hab. ad oras Hondureuses, insulae Mauritii et insularum Navi- 



